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Microscale Response of Sediment Variables to Benthic Disturbance in the Central Indian Ocean Basin
Authors:Shanta Nair  C Mohandass  P A Loka Bharathi  G Sheelu  Raghukumar Chandralata
Abstract:The response of sediment bacteria and biochemical variables to benthic disturbance was investigated in the Central Indian Ocean Basin from cores at nine stations. Generally, bacterial density and biochemical variables declined vertically with depth in the upper layers of the cores. Mechanical disturbance caused by a hydraulic disturber brought about a substantial decrease in total bacterial numbers. However, the numbers of retrievable bacteria increased by two orders of magnitude. The biochemical parameters decreased in quantity with a shift in the linear relationship. The data suggest that abiotic artifacts will directly affect the biomass and biochemistry of the sediment.
Keywords:Benthic  Bacteria  Biochemical  Parameters  Disturbance  Indian  Ocean
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